The longest covered bridge in the world, the Hartland bridge is comprised of 7 Howe truss spans for a total length of 1,282 feet (391 m). The original bridge was not covered, and was completed in 1901, on wooden piers. River ice in the St John river took out two spans in the flood of April 1920, and the bridge was rebuilt, with the piers changed to concrete, and the structure was covered, re-opening in 1922.
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